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On-chip plasmonic spin-Hall nanograting for simultaneously detecting phase and polarization singularities
Phase and polarization singularities are important degrees of freedom for electromagnetic field manipulation. Detecting these singularities is essential for modern optics, but it is still a challenge, especially in integrated optical systems. In this paper, we propose an on-chip plasmonic spin-Hall...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7260171/ https://www.ncbi.nlm.nih.gov/pubmed/32528669 http://dx.doi.org/10.1038/s41377-020-0330-z |
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author | Feng, Fu Si, Guangyuan Min, Changjun Yuan, Xiaocong Somekh, Michael |
author_facet | Feng, Fu Si, Guangyuan Min, Changjun Yuan, Xiaocong Somekh, Michael |
author_sort | Feng, Fu |
collection | PubMed |
description | Phase and polarization singularities are important degrees of freedom for electromagnetic field manipulation. Detecting these singularities is essential for modern optics, but it is still a challenge, especially in integrated optical systems. In this paper, we propose an on-chip plasmonic spin-Hall nanograting structure that simultaneously detects both the polarization and phase singularities of the incident cylindrical vortex vector beam (CVVB). The nanograting is symmetry-breaking with different periods for the upper and lower parts, which enables the unidirectional excitation of the surface plasmon polariton depending on the topological charge of the incident optical vortex beam. Additionally, spin-Hall meta-slits are integrated onto the grating so that the structure has a chiral response for polarization detection. We demonstrate theoretically and experimentally that the designed structure fully discriminates both the topological charges and polarization states of the incident beam simultaneously. The proposed structure has great potential in compact integrated photonic circuits. |
format | Online Article Text |
id | pubmed-7260171 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-72601712020-06-10 On-chip plasmonic spin-Hall nanograting for simultaneously detecting phase and polarization singularities Feng, Fu Si, Guangyuan Min, Changjun Yuan, Xiaocong Somekh, Michael Light Sci Appl Article Phase and polarization singularities are important degrees of freedom for electromagnetic field manipulation. Detecting these singularities is essential for modern optics, but it is still a challenge, especially in integrated optical systems. In this paper, we propose an on-chip plasmonic spin-Hall nanograting structure that simultaneously detects both the polarization and phase singularities of the incident cylindrical vortex vector beam (CVVB). The nanograting is symmetry-breaking with different periods for the upper and lower parts, which enables the unidirectional excitation of the surface plasmon polariton depending on the topological charge of the incident optical vortex beam. Additionally, spin-Hall meta-slits are integrated onto the grating so that the structure has a chiral response for polarization detection. We demonstrate theoretically and experimentally that the designed structure fully discriminates both the topological charges and polarization states of the incident beam simultaneously. The proposed structure has great potential in compact integrated photonic circuits. Nature Publishing Group UK 2020-05-29 /pmc/articles/PMC7260171/ /pubmed/32528669 http://dx.doi.org/10.1038/s41377-020-0330-z Text en © The Author(s) 2020 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Feng, Fu Si, Guangyuan Min, Changjun Yuan, Xiaocong Somekh, Michael On-chip plasmonic spin-Hall nanograting for simultaneously detecting phase and polarization singularities |
title | On-chip plasmonic spin-Hall nanograting for simultaneously detecting phase and polarization singularities |
title_full | On-chip plasmonic spin-Hall nanograting for simultaneously detecting phase and polarization singularities |
title_fullStr | On-chip plasmonic spin-Hall nanograting for simultaneously detecting phase and polarization singularities |
title_full_unstemmed | On-chip plasmonic spin-Hall nanograting for simultaneously detecting phase and polarization singularities |
title_short | On-chip plasmonic spin-Hall nanograting for simultaneously detecting phase and polarization singularities |
title_sort | on-chip plasmonic spin-hall nanograting for simultaneously detecting phase and polarization singularities |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7260171/ https://www.ncbi.nlm.nih.gov/pubmed/32528669 http://dx.doi.org/10.1038/s41377-020-0330-z |
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